GenComm GC7105B (base station analyzer) stuck on boot

[Event0]

Hi everyone,
I have recently acquired a GenComm (the company that became JDSU and now VIAVI) GC7105B base station analyzer for my ham radio uses.

The problem is... that it's broken (bought on ebay for 150€), in particular when i turn it on, after the first boot screen, a second boot screen appears and then the analyzer get stuck, i think it might be a "software" related issue. i tried booting it just with the main board (and the front panel) but the problem remains, on the sd card inside there are just a few files.
I couldn't find anything about this product online , no firmware or recovery files, not even a tread about my problem...

I have also tried using JDView and it seems to connect and download data from the Analyzer just fine.

Anyone who has this Analyzer is willing to exchange some info, maybe a way to acquire a new firmware?